以Y2O3为基质材料,掺杂不同含量的Nd3+添加PEG和(NH4)2SO4为分散剂,采用共沉淀法制备出性能良好的Nd3+:Y2O3纳米粉.对前驱体和不同温度下煅烧后的粉体进行差热热重、X射线衍射、比表面积和透射电镜等分析.结果表明,前驱体产物为Y2(OH)5(NO3)·nH2O时,Nd3+完全固溶于Y2O3的立方晶格中,Nd3+:Y2O3粉体大小均匀,近似球形.随着煅烧温度的升高,颗粒逐渐长大,900℃煅烧2h后颗粒尺寸约为40～60nm;粉体在1700℃和真空度为1×10-3Pa条件下烧结6h得到的Nd3+:Y2O3透明陶瓷的透光率接近78%.
Nd3+ : Y2O3 nanocrystalline powders are prepared by co-precipitation method using Y2O3 as the ma-trix material, doping different contents of Nd3+ and adding PEG and (NH4)2 SO4. The precursor and powders after be-ing calcined under different temperatures are characterized by TG/DTA, XRD, BET and TEM. The results show that the precursor is Y2(OH)5(NO3)·nH2O,the Nd3+ ions are solid-dissolved into the Y2O3 cubic structures;the Nd3+ : Y2O3 nanoerystalline powders are spherical-like with homogeneous granularity, which increase gradually with the increase of calcination temperature to about 40～60nm at 900℃ for 2h. The transmission of the Nd3+ : Y2O3 transparent ceramics fabricated by vacuum sintering at 1 × 10-3 Pa and 1700℃ for 6h can reach 78%.
参考文献
| [1] | Ikesue A.;Kamata K.;Yoshida K.;Kinoshita T. .FABRICATION AND OPTICAL PROPERTIES OF HIGH-PERFORMANCE POLYCRYSTALLINE ND-YAG CERAMICS FOR SOLID-STATE LASERS[J].Journal of the American Ceramic Society,1995(4):1033-1040. |
| [2] | Matsuua D .Red,green,and blue upconversion luminescenceb of triva ient-rare-earth ion-doped Y2O3 nanocrystals[J].Applied Physics Letters,2002,81:4526. |
| [3] | Petermann K.;Fornasiero L.;Kuch S.;Mix E.;Peters V.;Basun SA.;Huber G. .Rare-earth-doped sesquioxides[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2000(0):973-975. |
| [4] | Fornasiero L;Mix E;Peter V et al.Czochralski growth and laser parameter of RE3+ doped Y2O3 and Sc2O3[J].Ceramics International,2000,26:589. |
| [5] | Silver J et al.The effect of particle-morphology and crystallite size on the upconversion luminescence properties of erbium and ytterbium Co-doped yttium oxide phosphors[J].Journal of Physical Chemistry B,2001,105:948. |
| [6] | Laversenne L;Guyot Y;Goutaudier C .Optimization of spectroscopic properties of Yb3+-doped refractory sesquioxides:cubic Y2O3,Lu2O3 and Gd2O3[J].Optical Materials,2001,16:475. |
| [7] | Laversenne L;Kairouani S;Guyot Y et al.Correlation between dopant content and excited-state dynamics properties in Er3+-Yb3+-codoped Y2O3 by using a new combinnatorial method[J].Optical Materials,2002,19:59. |
| [8] | 孙凤久.应用光电子技术[M].沈阳:东北大学出版社,2005 |
| [9] | 罗军明,李永绣,邓莉萍,袁永瑞.共沉淀法制备Er3+：Y2O3上转换发光纳米粉[J].稀有金属材料与工程,2007(08):1436-1439. |
| [10] | Ikegami T;Li J;Mori T .Fabrication of transparent yttria ceramics by the low temperature synthesis of yttrium hydroxide[J].Journal of the American Ceramic Society,2002,85:1725. |
| [11] | Ikegami Takayasu;Ji-Guang Li;Isao Sakaguchi .Morphology Change of Undoped and Sulfate-Ion-Doped Yttria Powders during Firing[J].Journal of the American Ceramic Society,2004(3):517-519. |
| [12] | 刘军芳,傅正义,张东明,张金咏.透明陶瓷的制备技术及其透光因素的研究[J].硅酸盐通报,2003(03):68-73. |
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